Aib-coolino system fob intebnaircombtjstton engines



W. JAMES.

AIR 000mm SYSTEM FOR INTERNAL comsusnow ENGINES. APPLICATION FlLED MAYZ, 19H. 1,315,8Q3. .I.at011t0dS0pt. 9, 19M).

2 SHEETS-SHEET I.

W. IAIVIES.

AIR COOLING SYSTEM FOR INIEHNAL COMBUSTION ENGINES.

APPLICATION FILED MAYZ. I9I7- 1,3 1 5 ,84:3 Patented Sept. 9, 1919.

2 SHEETSSHEET 2.

WALTER JAMES, OF CAIRO, IOWA.

AIR-COOLING SYSTEM FOR INTERNAL-COMBUSTION ENGINES.

Specification of Letters Patent.

Patented Sept. 9,1919.

Application filed my 2, 1917. Serial No. 166,068.

To all whom it may concern:

Be it known that I, WALTER J Anne, 9. citizen of the United States, residing at Cairo, in the county of Louisa and State of Iowa,

have invented certain useful Improvements in Air-Cooling Systems for Internal-Combustion Engines, of which the following is a specification, reference being had therein to the accompanying drawing.

The present invention has reference enerally to improvements in that class 0 inventlons known as internal combustion engines and more particularly relates to an improved air cooling s stem for internal combustion engines pre erably of the type employed in motor vehicles.

As the primary aim and object, the present invention contemplates the provision of novel fan means operably connected to the drive shaft of an explosive engine providing a suction for drawing cool air into the fan casing and for forcing the cool air through the jackets of the engine cylinders whereby.

to cool the engines, thus preventing overheating of the engine during actuation.

More particularly, the present invention contemplates the provision of novel means for rigidly oonnectin the fan in rigid yet removable relation with respect to the shaft and for bracing the blades of the'fan.

As a further improvement the invention consists in the provision of novel means for journaling the shaft in the fan casing so as to insure of an effective rotation of the shaft.

Still further, the invention contemplates the provisionof improved means operably .mounted on the casing for tightening the belt which is shaft. More specific objects of the present invention reside in the provision of the means trained about a wheel on the i for mounting the belt engaging wheel on the shaft; to provide novel means for conducting alr from the fan casing to the jackets of the cylinders; and to provide improved means for removably connecting the fan casing to the hood support.

Among the other aims and objects of the present invention may be recited the provision of a device of the character mentioned with a view to compactness, and in which.

the number of parts are few, the construction simple, the cost of-production low, and the efiiciency high.

Other improvements and novel details in the construction and arrangement of the various parts of the apparatus will be brought out more in detail in the description to follow, which for a clear understanding of the invention, should be considered in connection with the accompanymg drawings forming a part hereof, and

wherein is disclosed for the purpose of il1ustration a convenient and satisfactory embodlment of the invention.

in the construction and arrangement of parts may be made without departing from the spirit of the invention or the principle of operation of the various parts.

The preferred embodiment of the present invention is clearly illustrated in the ac-' companying drawings, in which Flgure 1 is a side elevation of the invention.

Fig. 2 is a vertical longitudinal section thereof.v

Fig. 3 is a horizontal section taken on line 3--3 of Fig. 2.

Fig. 4 is a vertical transverse section taken on line 44 of Fig. 2,"and

Fig. 5 is a detail of the belt tightening means.

Similar characters of reference are employed in all of the above described views,

to indicate corresponding parts.

Referring now, more particularly, to the accompanying drawings there is provided a main upright support 1 which is connected to the front end of the frame of the vehicle and serves as the front of the hood thereof, being provided with a central opening 2 in which is mounted a frusto-comcal washer 3 the forward end of which passes through the opening and projects beyond the front face of the support, terminating. in an annular groove 4 in which is mounted a ring 5-carrying a piece of reticulated material 6 and through which cool air is adapted to be drawn.

With a view toward providing the improved fan means a cylindrical casin 6' is removably connected to the inner an ace of 0 It is to be noted in this connection that minor changes the support and about the opening 3 preferably by means of elongated bolts 7 the free ends of Which are engaged by nuts-8 which serve to clamp the casing against the support. The casing is provided with a central opening 9 in which is mounted a cup 10 for receiving ball bearings 11 and through which a threaded shaft 12 is journaled. A frustro-conical washer 13 is threaded on the shaft and coiiperates with the cup in retaining the ball bearings in position. A circular plate 14 is provided with a central open-- lng 15 which 1s held in registration with the opening 9 by means of suitable fastening devices 16 which rigidly connect the plate-to the outerface of the casing. Another cup 17 is'rigidly mounted in the opening in the plate and abuts the cup 10. Ball bearings 18 are receivable in the cup 17 and held in ceiving the shaft. Washers 21 are arranged about the shaft-and abut the disk to fac1litate the rigid mounting of the disk on the shaft. I A plurality of blades 22 are now provided the inner edges of which are provided with opposed supporting flanges 23 and with securing tongues 24 which pass through the disk so as to clamp the blades in a lane at right angles to the disk and radia ly thereof. The edges of the blades adjacent the center of the disk are provided with recesses 25 for accommodating the washers 22 and are further provided with extensions 26 engageable by the radiall arranged notches 27 in the peri hery o the I annular flan e 28 formed on t e interiorly threaded ad ustable sleeve 29. This sleeve is adjustably mounted on the outer end of the shaft and serves to clamp the washers and the disks against the adjacent face of the washer 13, the arrangement of the notches and the extensions serving to brace the blades while. a nut 30 serves to removably hold the sleevein a rigid position on the shaft. .11; will likewise be noted that the beveled edges of the blades arepositioned slightly within the frusto-conical shaft 3 so that when the shaft is rotated the fan will be rotated so as to draw air through the reticulated piece 6 into the the casing 6'.

With a view toward providing suitable means for insuring of the passage of cool air into the jackets of the engine cylindersv 31 a pipe 32 is provided and has one end connected to the adjacent cylinder 31 and ar ranged in communication with the jacket thereof and the offset end connected to the offset portion 33 on the casing 6 which loop offset portion is arranged in communication with the interior of the casing by means of registering openings 34 so that the air' wheel so as to rigidly connect the latter to the shaft. A .belt 38 operates about the pulley wheel 35 and also about another pulley wheel 39 carried by the rotatably mounted stub shaft 40 in the forward portion of the engine. A relatively large gear 41 is also carried by the projecting main. drive shaft 43 of the engine of the vehicle' with which the device is associated. By this arran ement it will be appreciated that because 0% the arrangement of the gears 42 and 41 and the belt connection between the shafts 40, and 12 that. the speed of the from a single piece of material such as rela tively thick wire which is bent upon itself and has portions 44 adjacent the bend arranged in spaced parallel relation with each other to provide a slot 45. A U-shaped portion 46 continues from and isoffset from one of the ortions 44 while the outer end of this section of the wire terminates in a 47 which is resiliently connected to the plate 14 by means of the coil spring 48. The other section or portion of the wire is extended at right angles and looped about the U-shaped portion as indicated by the numeral 50, the portion 51 continuing therefrom serving in the capacity of a stub shaft end of the.

upon which is rotatably mounted'a spool 52 prevented from accidental displacement by a nut 53 on the portion 51. The spool is adjusted to engage one lay of the belt 39 in the manner indicated so as to insure of an effective frictional engagement between the belt and the respectlve pulley wheels while the frame itself is adjustably mounted on the casing 6' by means of a suitable fastening device such as a. screw 54. It will be appreciated that by loosening the screw the frame may be slidthrough the medium of a the respective s or shown in the accompanyin tain the frame in a proper position. Suitable means "have been provided for lubricating the hearings in the present instance consisting of a manually controlled lubricating device 55 mounted in the upper portion of the plate 12 as'indicated.

The mode of operation of the present invention may be reviewed as follows:

Assuming that the parts have been assembled in the manner described, upon actuation of the drive shaft 43 rotary motion will be imparted to the stub shaft 40 owing to the meshing cars 42 and 41 carried by fiafts so that the shaft 40 will rotate faster than the shaft 43. Owin to the belt 38 trained about the pulley whee 39 on the shaft 40 and about the ulley wheel 35 on the shaft 12 the latter sha will be rotated at a corresponding rate of speed to consequently rotate the fan which draws cool air through the reticulated piece 6 into the casing 6' and forces the cool air through the registering or alining openin 34 respectively formed in the casing 6 and the ofiset portion 33; and through the pipe 32 into the jacket of the engine cylinder 31. Of course thisoperation will be continuous during the actuation of the engine so as to prevent the overheating of the same.

As many changes couldbe made in the.

above construction and many a parently widely different embodiments of t 1s invention could be made without departin from the scope thereof, and it is intended t at all matter contained in the above description drawings shall be interpreted as illustratlve and not in a limited sense. It is also to be understood that the language used in the following claims is intended to cover all the neric and specific features of the invention herein described and all statements of the sec e of the invention, which, as a matter of anguage might be said to fall therebetween.

Having thus fully described this inven tion, what is claimed as new and desired to be secured by Letters Patent, is

1. An air cooling system for internal combustion engines of motor vehicles including a frusto-cbnical shell mounted in the front end of the hood of the vehicle and projects ing therefrom, a reticulated covering for the shell, a casing removably mounted on the inner face of the front end of the hood and in the rear of the shell and provided with a a small central opening, a plate secured to the rear face of the casing and provided with a small central opening, ballbearing receiving cups disposed in the small openings and aiming with each other, ballbearings in the cups, a shaft having its threaded portion journaled through the cups, washers car chored to the from the edges of the blades near the cenried by the threaded portion of the shaft for cooperating with the cups, a fan mounted on the inner end of the shaft and disposed in the casing for drawing cold air through the reticulated covering, means for operably connecting the shaft with the main shaft of the engine, and a pipe leadin from the casmg and connected to the jac eted'cylinder of the engine and through which the air is forced by the fan. 7

2. An air cooling system for internal combustion engines of motor vehicles including a frusto-conical shell mounted in the front end of the hood of the vehicle and projecting exteriorly' therefrom, a screen covering the shell, a casing removably mounted on the inner surface of the front end of the hood and in the rear of the shell and provided with a central openin a shaft having its threaded portion journa ed in the opening in the casing, a fan mounted on the'shaft and arranged within the casing for drawing air through the screen into the casing, said fan embodying a disk rigidly connected to the shaft, a plurality of blades,

securing flanges rojecting from the-blades shaft and engageable with the extensions to increase the rigidity of the blades, means for operably connecting the threaded shaft with the main shaft of the en e, and a pipe leading from the casing an connected to the jacketed cylinder of the engine,

3. An air cooling system for internal combustion engines of motor vehicles including a frusto-conical shell mounted in the front end of the hood of the vehicle and projecting exteriorly therefrom, a screen covering the shell, a casing clamped to the rear face of the front end of the hood rearwardly of the shell and provided with a central opening, a plate secured to the rear face of the casing and also provided with a central opening, bearing cups mounted in the opening in the casing and the plate, ballbearings receivable in the on s, a shaft having one portion threaded an rotatably mounted in the cups, conical washers adjustable on the threaded portion of the shaft for cooperating with the hearings in the cup for preventing longitudinal displacement of the shaft, a fan connected to the shaft for drawing air through the screen into the casing, said fan consisting of a disk disposed about the shaft and within the casing, a pluralit of blades, securing flanges projectin rom the blades and anisk, extensions projecting ter of the disk, a sleeve adjustahly mounted on the threaded portion of the shaft, an annular flange projecting from the sleeve and formed with notches for engagin the extensions to increase the rigidity o the blades, a pulley Wheel on the outer end of the shaft, a supplemental rotatable shaft operatively connected to the main shaft of the engine, a belt trained about the pulley Wheels, and a pipe leading from the casing and connected to the jacketed cylinders of 10 the engine and through Which air is forced. In testimony whereof I affix my signature.

WALTER JAMES. 

